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osu-lazer/osu.Game/Input/IdleTracker.cs
2019-08-27 18:43:58 +09:00

78 lines
2.4 KiB
C#

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using osu.Framework.Bindables;
using osu.Framework.Graphics;
using osu.Framework.Input;
using osu.Framework.Input.Bindings;
using osu.Framework.Input.Events;
namespace osu.Game.Input
{
/// <summary>
/// Track whether the end-user is in an idle state, based on their last interaction with the game.
/// </summary>
public class IdleTracker : Component, IKeyBindingHandler<PlatformAction>, IHandleGlobalKeyboardInput
{
private readonly double timeToIdle;
private double lastInteractionTime;
protected double TimeSpentIdle => Clock.CurrentTime - lastInteractionTime;
/// <summary>
/// Whether the user is currently in an idle state.
/// </summary>
public IBindable<bool> IsIdle => isIdle;
private readonly BindableBool isIdle = new BindableBool();
/// <summary>
/// Whether the game can currently enter an idle state.
/// </summary>
protected virtual bool AllowIdle => true;
/// <summary>
/// Intstantiate a new <see cref="IdleTracker"/>.
/// </summary>
/// <param name="timeToIdle">The length in milliseconds until an idle state should be assumed.</param>
public IdleTracker(double timeToIdle)
{
this.timeToIdle = timeToIdle;
RelativeSizeAxes = Axes.Both;
}
protected override void Update()
{
base.Update();
isIdle.Value = TimeSpentIdle > timeToIdle && AllowIdle;
}
public bool OnPressed(PlatformAction action) => updateLastInteractionTime();
public bool OnReleased(PlatformAction action) => updateLastInteractionTime();
protected override bool Handle(UIEvent e)
{
switch (e)
{
case KeyDownEvent _:
case KeyUpEvent _:
case MouseDownEvent _:
case MouseUpEvent _:
case MouseMoveEvent _:
return updateLastInteractionTime();
default:
return base.Handle(e);
}
}
private bool updateLastInteractionTime()
{
lastInteractionTime = Clock.CurrentTime;
return false;
}
}
}